US8041179B2 - Methods and apparatuses for reproducing and recording still picture and audio data and recording medium having data structure for managing reproduction of still picture and audio data - Google Patents

Methods and apparatuses for reproducing and recording still picture and audio data and recording medium having data structure for managing reproduction of still picture and audio data Download PDF

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US8041179B2
US8041179B2 US10/782,867 US78286704A US8041179B2 US 8041179 B2 US8041179 B2 US 8041179B2 US 78286704 A US78286704 A US 78286704A US 8041179 B2 US8041179 B2 US 8041179B2
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still picture
audio data
stc
picture data
data
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US20040165867A1 (en
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Kang Soo Seo
Byung Jin Kim
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LG Electronics Inc
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LG Electronics Inc
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    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10527—Audio or video recording; Data buffering arrangements
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B20/00—Signal processing not specific to the method of recording or reproducing; Circuits therefor
    • G11B20/10—Digital recording or reproducing
    • G11B20/10009—Improvement or modification of read or write signals
    • G11B20/10222—Improvement or modification of read or write signals clock-related aspects, e.g. phase or frequency adjustment or bit synchronisation
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/02—Editing, e.g. varying the order of information signals recorded on, or reproduced from, record carriers
    • G11B27/031—Electronic editing of digitised analogue information signals, e.g. audio or video signals
    • G11B27/034—Electronic editing of digitised analogue information signals, e.g. audio or video signals on discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/102—Programmed access in sequence to addressed parts of tracks of operating record carriers
    • G11B27/105—Programmed access in sequence to addressed parts of tracks of operating record carriers of operating discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B27/00—Editing; Indexing; Addressing; Timing or synchronising; Monitoring; Measuring tape travel
    • G11B27/10—Indexing; Addressing; Timing or synchronising; Measuring tape travel
    • G11B27/19—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier
    • G11B27/28—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording
    • G11B27/32—Indexing; Addressing; Timing or synchronising; Measuring tape travel by using information detectable on the record carrier by using information signals recorded by the same method as the main recording on separate auxiliary tracks of the same or an auxiliary record carrier
    • G11B27/327—Table of contents
    • G11B27/329—Table of contents on a disc [VTOC]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/213—Read-only discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/21—Disc-shaped record carriers characterised in that the disc is of read-only, rewritable, or recordable type
    • G11B2220/215—Recordable discs
    • G11B2220/216—Rewritable discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2541—Blu-ray discs; Blue laser DVR discs
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B2220/00—Record carriers by type
    • G11B2220/20—Disc-shaped record carriers
    • G11B2220/25—Disc-shaped record carriers characterised in that the disc is based on a specific recording technology
    • G11B2220/2537—Optical discs
    • G11B2220/2562—DVDs [digital versatile discs]; Digital video discs; MMCDs; HDCDs
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/84—Television signal recording using optical recording
    • H04N5/85—Television signal recording using optical recording on discs or drums
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
    • H04N9/806—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components with processing of the sound signal
    • H04N9/8063—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components with processing of the sound signal using time division multiplex of the PCM audio and PCM video signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N9/00—Details of colour television systems
    • H04N9/79—Processing of colour television signals in connection with recording
    • H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
    • H04N9/82—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only
    • H04N9/8205—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal
    • H04N9/8227—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback the individual colour picture signal components being recorded simultaneously only involving the multiplexing of an additional signal and the colour video signal the additional signal being at least another television signal

Definitions

  • the present invention relates to methods and apparatuses for reproducing and recording still picture and audio data, and to a recording medium having a data structure for managing reproduction of still picture and audio data.
  • BD-RE Blu-ray Disc Rewritable
  • BD-ROM Blu-ray Disk ROM
  • the recording medium according to the present invention includes a data structure for managing reproduction of still pictures and audio data recorded on the recording medium.
  • still picture data and audio data reproduced from the recording. medium are decoded based on respective, independent system times (STCs). For example, a first STC for the still picture data is generated based on the still picture data reproduced from the recording medium, and a second STC for the audio data is generated based on the audio data reproduced from the recording medium.
  • STCs system times
  • the first STC is generated from program clock references (PCRs) in the still picture data
  • the second STC is generated from PCRs in the audio data.
  • the still picture data and the audio data are decoded based on the first and second STCs, respectively, and presentation time stamps (PTSs) in the respective still picture and audio data.
  • PTSs presentation time stamps
  • the present invention further provides apparatuses and methods for recording and reproducing the data structure according to the present invention, and recording and reproducing slide shows according to the present invention.
  • FIG. 1 illustrates an exemplary embodiment of a recording medium file or data structure according to the present invention
  • FIG. 2 illustrates an example of a recording medium having the data structure of FIG. 1 stored thereon;
  • FIGS. 3 and 4 illustrate a detailed embodiment of portions of the data structure in FIG. 1 and a method for managing still images of a high-density recording medium according to the present invention
  • FIG. 5 illustrates a schematic diagram of a partial structure of an optical disc reproducing apparatus according to an embodiment of the present invention
  • FIG. 6 illustrates a detailed structure of a first embodiment of an optical disc apparatus according to the present invention
  • FIG. 7 is a detailed structure of a second embodiment of an optical disc apparatus according to the present invention.
  • FIG. 8 illustrates another embodiment of a recording and reproducing apparatus according to the present invention.
  • a high-density recording medium such as a high density optical disk, for example, a Blu-Ray ROM (BD-ROM), BD-RE, etc. in accordance with the invention may have a file or data structure for managing reproduction of video and audio data as shown in FIG. 1 .
  • BD-ROM Blu-Ray ROM
  • FIG. 1 Some aspects of the data structure according to the present invention shown in FIG. 1 are the same as the well-known BD-RE standard, as such these aspects will be reviewed, but not described in great detail.
  • the root directory contains at least one BD directory.
  • the BD directory includes general files (not shown), a PLAYLIST directory in which playlist files (e.g., *.mpls) are stored, a CLIPINF directory in which clip information files (*.clpi) are stored, and a STREAM directory in which MPEG2-formatted A/V stream clip files (*.m2ts), corresponding to the clip information files, are stored.
  • the STREAM directory includes MPEG2-formatted A/V stream files called clip streams files or just clip files.
  • the A/V stream includes source packets of video and audio data.
  • a source packet of video data includes a header and a transport packet.
  • a source packet includes a source packet number, which is generally a sequentially assigned number that serves as an address for accessing the source packet.
  • Transport packets include a packet identifier (PID). The PID identifies the sequence of transport packets to which a transport packet belongs. Each transport packet in the sequence will have the same PID.
  • the CLIPINF directory includes a clip information file associated with each A/V stream file.
  • the clip information file indicates, among other things, the type of A/V stream associated therewith, sequence information, program information and timing information.
  • the sequence information describes the arrival time basis (ATC) and system time basis (STC) sequences.
  • ATC arrival time basis
  • STC system time basis
  • the sequence information indicates, among other things, the number of sequences, the beginning and ending time information for each sequence, the address of the first source packet in each sequence and the PID of the transport packets in each sequence.
  • a sequence of source packets in which the contents of a program is constant is called a program sequence.
  • the program information indicates, among other things, the number of program sequences, the starting address for each program sequence, and the PID(s) of transport packets in a program sequence.
  • CPI characteristic point information
  • the timing information is referred to as characteristic point information (CPI).
  • CPI characteristic point information
  • the EP map maps a presentation time stamp (e.g., on an arrival time basis (ATC) and/or a system time basis (STC)) to a source packet address (i.e., source packet number).
  • ATC arrival time basis
  • STC system time basis
  • PTS presentation time stamp
  • SPN source packet number
  • the packet pointed to is often referred to as the entry point packet.
  • the PLAYLIST directory includes one or more playlist files.
  • the concept of a playlist has been introduced to promote ease of editing/assembling clips for playback.
  • a playlist file is a collection of playing intervals in the clips. Each playing interval is referred to as a playitem.
  • the playlist file identifies each playitem forming the playlist, and each playitem, among other things, is a pair of IN-point and OUT-point that point to positions on a time axis of the clip file (e.g., presentation time stamps on an ATC or STC basis).
  • the playlist file may also include sub-playitems that also provide a pair of IN-point and OUT-point that point to positions on a time axis of a clip file.
  • the playlist file identifies playitems and sub-playitems, each playitem or sub-playitem points to a clip file or portion thereof and identifies the clip information file associated with the clip file.
  • the clip information file is used, among other things, to map the playitems to the clip file of source packets. Playlists may also include playlist marks which point to specific places (e.g., a specific address) in a clip file
  • the general information files (not shown) provide general information for managing the reproduction of the A/V streams recorded on the optical disk.
  • FIG. 1 represents the areas of the recording medium.
  • the general information files are recorded in one or more general information areas
  • the playlist directory is recorded in one or more playlist directory areas
  • each playlist in a playlist directory is recorded in one or more playlist areas of the recording medium, etc.
  • FIG. 2 illustrates an example of a recording medium having the data structure of FIG. 1 stored thereon.
  • the recording medium includes a file system information area, a data base area and an A/V stream area.
  • the data base area includes a general information file and playlist information area and a clip information area.
  • the general information file and playlist information area have the general information files recorded in a general information file area thereof, and the PLAYLIST directory and playlist files recorded in a playlist information area thereof.
  • the clip information area has the CLIPINFO directory and associated clip information files recorded therein.
  • the A/V stream area has the A/V streams for the various titles recorded therein.
  • Video and audio data are typically organized as individual titles; for example, different movies represented by the video and audio data are organized as different titles. Furthermore, a title may be organized into individual chapters in much the same way a book is often organized into chapters.
  • BD-ROM and BD-RE optical disks Because of the large storage capacity of the newer, high-density recording media such as BD-ROM and BD-RE optical disks, different titles, various versions of a title or portions of a title may be recorded, and therefore, reproduced from the recording media. For example, video data representing different camera angles may be recorded on the recording medium. As another example, versions of title or portions thereof associated with different languages may be recorded on the recording medium. As a still further example, a director's version and a theatrical version of a title may be recorded on the recording medium. Or, an adult version, young adult version and young child version (i.e., different parental control versions) of a title or portions of a title may be recorded on the recording medium. Each version, camera angle, etc. represents a different reproduction path, and the video data in these instances is referred to as multiple reproduction path video data.
  • high-density recording media such as BD-ROM
  • still images or pictures may be recorded and reproduced in an organized and/or user interactive fashion, for example, as slideshows.
  • the data structure for managing reproduction of still pictures for a high-density recording medium in accordance with embodiments of the present invention will be described along with methods and apparatuses according to embodiments of the present invention for recording and reproducing still images.
  • still images may be displayed as a sequential slideshow, a random/shuffle slideshow, or a browsable slideshow.
  • a sequential slideshow involves the reproduction of still images having limited duration in the order set forth by the playlist. This reproduction of the still images may also occur in synchronized reproduction with audio data.
  • a browsable slide show involves reproduction of still images having infinite duration in an order set forth by, for example, the playlist. Reproduction proceeds to a previous or subsequent still image based on user input.
  • a random/shuffle slideshow is a form of sequential or browsable slideshow in which the order to reproduce the still images is randomized.
  • FIGS. 3 and 4 illustrate an embodiment of a data structure and method for managing still images of a high-density recording medium such as a BD-ROM.
  • the component data streams of the still picture stream and the related data streams are packetized into PES packets on a still image basis.
  • each PES packet of the still picture stream includes a single still picture
  • the associated PES packets of the related data include the related data associated with the still picture (e.g., for reproduction in synchronization with the associated still picture).
  • the still picture together with related data to be reproduced in synchronization therewith are grouped into a still picture unit.
  • the still picture stream and related data streams are multiplexed into a still picture file of MPEG2 transport streams.
  • FIG. 3 further shows a clip information file corresponding to the still picture file.
  • the clip information file includes an entry point map (EP_MAP).
  • Individual entry points (EP #1 ⁇ #k) in the EP map contain respective navigation information for accessing a head recording position of a corresponding still picture unit.
  • the navigation information for example, includes source packet number entry point start (SPN_EP_Start) information indicating the start recording position of the corresponding still picture unit.
  • SPN_EP_Start source packet number entry point start
  • FIG. 4 illustrates a playlist for play control of the still picture file discussed above with respect to FIG. 3 .
  • a playitem (PlayItem) in the playlist contains in-picture (IN_picture) information and out-picture (OUT_picture) information corresponding respectively to the start position and end position of the still images in the still picture file to reproduce.
  • a sub-playitem (SubPlayItem) in the playlist contains sub-playitem in-time (SubPlayItem_IN_time) information and sub-playitem out-time (SubPlayItem_OUT_time) information for a separate audio file to be reproduced in association with the still picture file.
  • the audio data may be reproduced in either a synchronized or unsychronized fashion with the associated still images.
  • the playlist further includes a playlist mark, referred to hereinafter as still mark, pointing to each still picture.
  • the presentation duration information for the still picture and related data included in a still picture unit may be recorded in the still mark corresponding to the still picture unit. Alternatively or additionally, the presentation duration information may be contained in the playitem.
  • the still marks are particularly useful when skipping between pictures during a browsable slideshow. It will further be appreciated that the still picture file or portions thereof can be simultaneously associated with a number of playlists with presentation durations different from each other.
  • PTS Presentation time stamps
  • a PTS has a value in proportion to, for example, the well-known program clock reference (PCR) value; and therefore, as described below, will have a value proportional to a time base defined by PCRs referred to as STC (e.g., a system time based on of PCRs).
  • STC program clock reference
  • the PCR is a time stamp added to packets in an MPEG2 transport stream according to the MPEG2 standard.
  • the STC e.g., PCR count
  • an identical PTS is recorded to both the PES packet of a still picture with infinite presentation duration and the PES packet of the preceding still picture.
  • a reproducing apparatus may calculate the difference between the PTSs recorded in subsequent entry points or subsequent still picture PESs to determine presentation duration for the second of the two consecutive still pictures. When the difference between the PTSs is zero, the reproducing apparatus reproduces the corresponding still picture with infinite presentation duration —meaning that the still picture is reproduced until user input providing instructions to the contrary is received. Otherwise, the reproducing apparatus reproduces the still picture for the calculated duration.
  • the reproducing apparatus decides whether the presentation duration for each still picture is infinite or finite.
  • the presentation duration corresponds to infinite, the reproducing apparatus does not increase the STC but maintains the previous value.
  • the reproducing apparatus conducts a series of operations to normally increase the STC.
  • FIG. 5 illustrates a schematic diagram of a partial structure of an optical disc reproducing apparatus according to an embodiment of the present invention.
  • the optical disc reproducing apparatus includes an optical pickup 111 for reproducing data from the an optical disk.
  • a VDP (Video Disc Play) system 112 controls the reproduction operation of the optical pickup 111 and demodulates the data reproduced by the optical pickup 111 .
  • the VDP 112 produces an AV stream, which may also be fed to a D/A converter 113 to generate an analog version of the AV stream.
  • VDP Video Disc Play
  • the VDP system 112 controls the optical pickup 111 and demodulates the reproduced data based on user input received from a user interface and the navigation and management information recorded on the optical disk in accordance with the present invention.
  • the VDP system 112 makes reference to still marks included in a playlist and an entry point map included in a clip information file as described above to reproduce a still picture file.
  • the VDP system 112 reads out a still picture, graphic data, and subtitle data of each still picture unit according to the order of entry points (EP #1, #2, . . . ) recorded in the entry point map.
  • the VDP system 112 conducts a series of operations for reproducing still pictures, which may be (i) reproduced for a fixed time duration according to the presentation duration information included in the still marks or determined form the PTSs, or (ii) reproduced in the form of skipped reproduction in units of the still picture unit, for example, corresponding to each of the still marks, according to the key input of the user.
  • the VDP system 112 may comprise a switch 120 , a track buffer 121 , a TS demultiplexer 122 , a video buffer 123 , a graphic buffer 124 , a subtitle buffer 125 , an audio buffer 126 , a video decoder 127 , a graphic decoder 128 , a subtitle decoder 129 , an audio decoder 130 , a microcomputer 131 , a first STC generator 140 and a second STC generator 141 .
  • the microcomputer 131 controls the operation of the switch 120 according to the key input of a user or presentation duration information, thereby selectively feeding a still picture (V), graphic data (G), and subtitle data (ST) into the track buffer 121 .
  • the TS demultiplexer 122 makes reference to the packet ID (PID) of the data stream temporarily stored in the track buffer 121 and distributes still picture data, graphic data, and subtitle data into the video buffer 123 , the graphic buffer 124 , and the subtitle buffer 125 , respectively.
  • PID packet ID
  • the video decoder 127 decodes the still picture data
  • the graphic decoder 128 decodes the graphic data
  • the subtitle decoder 129 decodes the subtitle data.
  • the microcomputer 131 controls the operation of the switch 120 and selectively feeds audio data (A) read out from an optical disc into the track buffer 121 .
  • the TS demultiplexer 122 makes reference to the packet ID (PID) of the audio data stream temporarily stored in the track buffer 121 , thereby separating the audio data into the audio buffer 126 .
  • the TS demultiplexer 122 separates each audio presentation time stamp (A_PTS) from the reproduced audio data stream and sends the A_PTSs to the audio decoder 130 .
  • the TS demultiplexer 122 also separates audio program clock references (A_PCRs) from the reproduced audio data stream and sends the A_PCRs to the first STC generator 140 , which counts the A_PCR to generate an audio STC. Then, the audio STC (A_STC) is sent to the audio decoder 130 .
  • the audio decoder 130 compares the A_PTS with the A_STC and outputs decoded audio when they are of the same value.
  • the TS demultiplexer 122 separates each still picture presentation time stamp (S_PTS) from the reproduced still picture data stream and sends the S_PTSs to an MPEG decoder 170 formed by the video decoder 127 , the graphic decoder 128 , and the subtitle decoder 129 .
  • the TS demultiplexer 122 also separates still picture data program clock references (S_PCRs) from the reproduced still picture data stream and sends the S_PCRs to the second STC generator 141 , which counts the S_PCRs to generate an still picture STC. Then, the still STC (S_STC) is sent to the MPEG decoder 170 .
  • S_PCRs still picture data program clock references
  • the MPEG decoder 170 keeps comparing the S_PTS with the S_STC and outputs a still image when they are of the same value. If the presentation duration of the still image is limitless, the microcomputer 131 controls the second STC generator 141 to stop its counting operation.
  • the microcomputer 131 loads the PCR obtained from the still picture to be displayed into the second STC generator 141 and resumes the PCR counting operation.
  • the optical disk reproducing apparatus may reproduce still images recorded on the optical disk using the MPEG decoder 170 for reproducing movie data by utilizing the first and second STC generators 140 and 141 and perform browsable slideshow operations for the still images responsive to user key input.
  • the audio data and still picture data may be reproduced independently because of the separate and independent STC control provided by the first and second STC generators 140 and 141 . Namely, if a user changes the still picture being displayed as described above, this does not affect the decoding of the audio data.
  • a STC adder 151 may be employed instead of the second STC generator 141 such as shown in FIG. 7 .
  • the microcomputer 131 controls the STC adder 151 in such a way that the S_STC generated thereby is not applied to the MPEG decoder 170 .
  • the microcomputer 131 calculates the difference between a PCR obtained from the still picture to be displayed and the A_STC reproduced by the first STC generator 140 , and outputs the difference to the STC adder 151 as a PCR offset.
  • the STC adder 151 adds the A_STC from the STC generator 140 and the PCR offset from the microcomputer 131 , and outputs the sum as the S_STC to the MPEG decoder 170 .
  • the optical disk reproducing apparatus may reproduce still images recorded on the optical disk using the MPEG decoder 170 for reproducing movie data by utilizing the S_STC and output from the STC adder 151 and may perform browsable slideshow operations for the still images responsive to user key input.
  • FIG. 8 illustrates a schematic diagram of an embodiment of an optical disk recording and reproducing apparatus according to the present invention.
  • an AV encoder 9 receives and encodes data (e.g., still image data, audio data, etc.). The AV encoder 9 outputs the encoded data along with coding information and stream attribute information.
  • a multiplexer 8 multiplexes the encoded data based on the coding information and stream attribute information to create, for example, an MPEG-2 transport stream.
  • a source packetizer 7 packetizes the transport packets from the multiplexer 8 into source packets in accordance with the audio/video format of the optical disk. As shown in FIG. 8 , the operations of the AV encoder 9 , the multiplexer 8 and the source packetizer 7 are controlled by a controller 10 .
  • the controller 10 receives user input on the recording operation, and provides control information to AV encoder 9 , multiplexer 8 and the source packetizer 7 .
  • the controller 10 instructs the AV encoder 9 on the type of encoding to perform, instructs the multiplexer 8 on the transport stream to create, and instructs the source packetizer 7 on the source packet format.
  • the controller 10 further controls a drive 3 to record the output from the source packetizer 7 on the optical disk.
  • the controller 10 also creates the navigation and management information for managing reproduction of the data being recorded on the optical disk. For example, based on information received via the user interface (e.g., instruction set saved on disk, provided over an intranet or internet by a computer system, etc.) the controller 10 controls the drive 3 to record one or more of the data structures of FIGS. 1-4 on the optical disk.
  • the controller 10 controls the drive 3 to record one or more of the data structures of FIGS. 1-4 on the optical disk.
  • the controller 10 controls the drive 3 to reproduce this data structure. Based on the information contained therein, as well as user input received over the user interface (e.g., control buttons on the recording and reproducing apparatus or a remote associated with the apparatus), the controller 10 controls the drive 3 to reproduce the data from the optical disk. For example, as discussed above with respect to the embodiments of the present invention, a still image or still images may be reproduced in association with audio data based on the navigation information. Furthermore, an image or group of images may be reproduced as a slideshow or portion of a slideshow. As also discussed, a slideshow may be synchronized, browsable, etc.
  • the reproduced source packets are received by a source depacketizer 4 and converted into a data stream (e.g., an MPEG-2 transport packet stream).
  • a demultiplexer 5 demultiplexes the data stream into encoded data.
  • An AV decoder 6 decodes the encoded data to produce the original data that was feed to the AV encoder 9 .
  • the controller 10 controls the operation of the source depacketizer 4 , demultiplexer 5 and AV decoder 6 .
  • the controller 10 receives user input on the reproducing operation, and provides control information to AV decoder 6 , demultiplexer 5 and the source packetizer 4 .
  • the controller 10 instructs the AV decoder 9 on the type of decoding to perform, instructs the demultiplexer 5 on the transport stream to demultiplex, and instructs the source depacketizer 4 on the source packet format.
  • FIG. 8 has been described as a recording and reproducing apparatus, it will be understood that only a recording or only a reproducing apparatus may be provided using those portions of FIG. 8 providing the recording or reproducing function.
  • the present invention provides a recording medium having a data structure for managing still images and audio data recorded on a high-density recording medium (e.g., a high-density optical disk such as a BD-ROM).
  • a high-density recording medium e.g., a high-density optical disk such as a BD-ROM.
  • the data structure allows for displaying still images and audio data in various ways.
  • the method of managing still images for a high-density recording medium in accordance with the invention provides various still control operations and allows effective linked reproduction of still images along with associated subtitle data or graphic images.
  • the present invention provides methods and apparatuses for recording a data structure on a high density recording medium for managing still images and audio data recorded on the recording medium.
  • the above description further provides methods and apparatuses for reproducing still image and audio data recorded on a high density recording medium.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Multimedia (AREA)
  • Signal Processing For Digital Recording And Reproducing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Management Or Editing Of Information On Record Carriers (AREA)
  • Indexing, Searching, Synchronizing, And The Amount Of Synchronization Travel Of Record Carriers (AREA)
US10/782,867 2003-02-24 2004-02-23 Methods and apparatuses for reproducing and recording still picture and audio data and recording medium having data structure for managing reproduction of still picture and audio data Active 2026-12-31 US8041179B2 (en)

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